Summary
Fourteen new species of palms (Arecaceae) from Madagascar are described and named, based on material collected over the last 15 years. Twelve species belong to the genus Dypsis, namely D. andilamenensis Rakotoarin. & J. Dransf., D. anjae Rakotoarin. & J. Dransf., D. betsimisarakae Rakotoarin. & J. Dransf., D. culminis Rakotoarin. & J. Dransf., D. dracaenoides Rakotoarin. & J. Dransf., D. gautieri Rakotoarin. & J. Dransf., D. gronophyllum Rakotoarin. & J. Dransf., D. jeremiei Rakotoarin. & J. Dransf., D. metallica Rakotoarin. & J. Dransf., D. reflexa Rakotoarin. & J. Dransf., D. sancta Rakotoarin. & J. Dransf. and D. vonitrandambo Rakotoarin. & J. Dransf. and two species belong to the genus Ravenea: R. beentjei Rakotoarin. & J. Dransf. and R. hypoleuca Rakotoarin. & J. Dransf. Despite the fact that most of these species have been recorded from protected areas that are difficult to access in the eastern region of Madagasacar, they are all threatened. Based on IUCN categories and criteria, seven are Critically Endangered and seven are Vulnerable.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Britt, A. & Dransfield, J. (2005). Dypsis delicatula. Palms 49: 40 – 44.
Dransfield, J. (2003). Dypsis turkii. Palms 47: 26 – 30.
____ & Beentje, H. J. (1995). The Palms of Madagascar. Royal Botanic Gardens, Kew.
____ & Marcus, J. (2002). Dypsis ‘stumpy’. Palms 46: 47 – 51.
____, Rakotoarinivo, M., Baker, W. J., Bayton R. P., Fisher, J. B., Horn, J. W., Leroy, B. & Metz, X. (2008). A new Coryphoid palm genus from Madagascar. Bot. J. Linn. Soc. 156: 79 − 91.
Hanski, I., Koivulehto, H., Cameron, A. & Rahagalala, P. (2007). Deforestation and apparent extinctions of endemic forest beetles in Madagascar. Biol. Lett. 3: 344 − 347.
Hodel, D. R. & Marcus, J. (2004). The White Powder Dypsis: A new species from cultivation. Palms 48: 90 − 93.
IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission. IUCN, Gland, Switzerland and Cambridge, UK.
Moat, J. & Smith, P. (2007). Atlas de la végétation de Madagascar. Royal Botanic Gardens, Kew.
Rakotoarinivo, M. (2008). A remarkable Ravenea from the montane forest of Andilamena, Madagascar. Palms 52: 11 − 17.
____, Ranarivelo, T. & Dransfield, J. (2007). A new species of Beccariophoenix from the High Plateau of Madagascar. Palms 51: 63 − 75.
____, Trudgen, M. S. & Baker, W. J. (2009). The palms of the Makira Protected Area, Madagascar. Palms 53: 125 − 146.
Acknowledgements
The authors wish to thank the following researchers who collected palms in Madagascar and shared their samples with the Kew Herbarium: Anja Byg, Jeremie L. Razafitsalama and Laurent Gautier. Special thanks to William J. Baker for his continuous encouragement, to Lucy Smith for having drawn all the plates of these new species and to Soraya Villalba for helping in the preparation of digital versions of the plates. We thank two anonymous reviewers for their constructive criticism.
Author information
Authors and Affiliations
Corresponding author
Additional information
Accepted for publication July 2010.
Rights and permissions
About this article
Cite this article
Rakotoarinivo, M., Dransfield, J. New species of Dypsis and Ravenea (Arecaceae) from Madagascar. Kew Bull 65, 279–303 (2010). https://doi.org/10.1007/s12225-010-9210-7
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12225-010-9210-7